Packing for pump-plungers



No. 626,856.' Patented lune I3, |899.

n F. E. CHASE. PACKING FUR PUMP PLUNGERS.

(Application led Hay 19, 189B.)

(No Model.)

WEZ-,ze ss es UNITED STATES' PATENT FRANK E. CHASE, OF TONAVANDA, NEV YORK, ASSIGNOR OF ONE-THRD TO JOHN MAHAR, OF NORTH TONAVANDA, 'NEWT YORK.

PACKING FOR PUMP-PLUNGERS.

SPECIFICATION forming part f Letters Patent N0. 626,856, dated .Tune 13, 1899. Application filed May 19, 1898 Serial' No.681,l23. (No n10-del.)

To all whom zit may concern:

Be it known that l, FRANK E. CHASE, a citizen of the United States, residing at Tonawanda, in the county of Erie and State of New York, have invented new and usefullmprovements in Packing for Pump Plungers, of which the following is a specification.

This invention relates to a packing for the plungers of horizontal pumps of large capacity, and more particularly to pumps in which the plunger reciprocates in a diaphragm or partition which separates the two cylinders. In pumps of this character the weight of the plunger causes the packing between the same i 5 and the partition to wear rapidly on the lower side, thereby necessitating frequent renewal of the packing in order to prevent the water from leaking between these parts and also to keep the plungerin alinement with the plunger-rod. v

The object of my invention is to provide a packing for the plungers of this class of pumps which is simple and durable in construction and which can be readily adjusted for taking up wear.

'In the accompanying drawings, Figure l is a fragmentary longitudinal sectional elevation of a horizontal pump provided with my improved packing, the section being taken in line l 1, Fig. 2. Fig. 2 is a vertical transverse section thereof in line 2 2, Fig. l. Fig. 3 is a fragmentary longitudinal section of the partition separating the pump-cylinders and the plunger-packing arranged therein, the section being taken on the same line as Fig. l. Fig. 4 is a fragmentary longitudinal section in line 4 4, Fig. 2. Fig. 5 is a perspective view of the adjusting device.

Like letters of reference refer to like parts in the several figures.

A A represent the two horizontal pumpeylinders arranged end to end and separated by a vertical partition B, C C the inlet and outlet chambers arranged, respectively, below and above the cylinders, D the inwardlyopening valves connecting the cylinders with the inlet-chamber, D the outwardly-opening' valves -connectingthe cylinders with the outlet-chamber, E the horizontal cylindrical plu nger arranged in a circular opening in the partition, and F the horizontal plunger-rod connected with the plunger and passing through a stufng-boxf in the'head of one of the cylinders, all of which parts may be of any usual and suitable construction.

The bore of the partition is provided with an annular enlargement or seat G,which opens through one side of the partition, while. its other end is contracted and forms a shoulder g at this end of the seat.

H represents an annular gland which fits into the open end of the seat and which is connected with the partition by bolts h.

I represents a split packing-ring which is arranged in the seat of the partition and around the plunger and which bears with one edge against the shoulder g and with its other edge against the gland. The split portion of the packing-ring is preferably arranged on one side and about midway of its height, and 7o the end of its upper portion is horizontal, as shown at 'i in Figs. 3 and 4, while the end of the lower portion is inclined, as shown at i', so that the opposing ends of the packing-ring diverge toward the gland.

J represents a filling piece or wedge fitting into the space between the ends of the packin g-ring, so as to form, together with the split ring, a packing which extends completely around the plunger. This filling-piece can 8o be moved backward and forward for loosening or tightening the same by means of a loosening-screwj and a tightening-screwj. The tightening-screw engages with a screwthreaded opening in the gland and bears with its inner end against the iilling-piece. Upon turning this screw so that it moves inwardly the fillingpiece is moved forwardly and wedged in between the ends of the split ring and forms a tight joint at thispoint. The 9o loosening-screw passes loosely through an opening in the gland and engages with its inner screw-threaded end in a screw-threaded opening in the filling-piece, while its head bears against the ou ter side of the gland. Vhen itis desired to loosen the illing-piece, the tightening-screw is retracted and the loosening-screw is turned in the direction for moving the filling-piece backwardly, thereby producing a slack between the ends of the loo split ring. Preparatory to again tightening the filling-piece the loosening-screw is unscrewed suflciently from the lling-piece to permit the latter to be moved forward the required distance by the tightening-screw.

K represents an adjusting device whereby the lower portion of the packing-ring may be raised for taking up the wear on the same and the plunger. sists, preferably, of a longitudinal movable slide or wedge which is arranged in a recess 7c, formed in the under side of the split ring, and rests with its lower side on the bottom of the seat in the partition, while its upper side is provided with one or more inclines 7a,which bear against corresponding inclines 7a2 on the upper side of the recess in the packing-ring. The slope of the inclines on the take-up slide and the ring is such that upon moving the slide backwardly or toward the gland the lower section of the ring is raised. This movement of the slide is effected bya screwthreaded adjusting-stem Z, arranged loosely in an opening in the gland and connected at its inner end with the slide, while its outer end is provided with an adjusting screw-nut Z', which bears against the outer side of the gland.

When the lower sides of the plunger and the packing-ring become worn to such an eX- tent as to cause leakage, the filling-piece is first loosened and then the take-up slide is moved backwardly the required distance for raising the lower portion of the packing-ring and the plunger resting thereon until the packing-ring bears all around against the plunger, after which the filling-piece is again tightened between the ends of the ring. By this means the wear upon the packing-ring and plunger can be quickly and conveniently taken up, thereby necessitating stopping of the pump only a short time, and it also permits of always maintaining the plunger in alinement with the plungerrod, thereby avoiding undue wear of the latter and its stulng-box.

By providing the upper portion of the packing-ring with a horizontal end and the lower portion with an inclined end the lower portion can be raised for taking up wear without displacing the lling-piece circumferentially, thereby avoiding cramping of the adjustingscrews of the filling-piece.

If desired, the packing-ring maybe split on diametrically opposite sides, in which case two illing-pieces are required, one for each split portion of the ring.

I claim as my inventionl. The combination with the horizontal pump-eylinder,the vertical partition arranged in said cylinder and provided with a circular opening and with a circular seat in the bore of said opening, and the horizontal cylindrical plunger passing through said opening, of a packing-ring which is arranged in said opening and bears with its inner surface against the plunger and with its outersurface against This take-up device consaid seat and which is split on its side, an adjusting device engaging against the lower portion of the packing-ring and adapted to lift the lower portion of the ring and the plunger resting thereon while the upper portion of the ring abuts against the top of said seat and is held against vertical movement, anda iilling-piece arranged between the ends of the split packing-ring and iitting between the plunger and said seat, substantially as set forth.

2. In a pump, the combination with the partition and the plunger passing through an opening in the same, of a split packing-ring arranged in said opening and around the plunger and having its split portion arranged on one side, and a slide or wedge arranged in a recess in the lower portion of the packingring and engaging with an incline on the upper side of said recess, substantially as set forth.

3. In a pump, the combination with the partition and the plunger passing through an opening in the same, of a split packing-ring arranged in said opening and around the plunger and having its split portion arranged on one side, a shoulder arranged on the partition and bearing against one edge of the packing-ring, a gland bearing against the opposite edge of the packing-ring, a filling-piece ar- ,f ranged between the ends of the packing-ring,

awedge arranged inarecess in the lower portion of the packing-ringand bearing with one side against said ring and with its opposite side against the bore of the opening, and a screw-adjusting stem arranged in the gland and connected with said wedge, substantially as set forth.

4. In a pump, the combination with the partition and the plunger passing through an opening in the same, of a split packing-ring` arranged in said opening and around the plunger and having its split portion arranged about midway of its height, the end of the upper portion of said ring being horizontal while the end of the lower portion thereof is inclined, a shoulder arranged on the partition and bearing against one edge of the packing-ring, a gland bearing against the opposite edge of the packing-ring, a wedge arranged between the ends of the split ring, a tighteningscrew engaging with a screw threaded opening in the gland and bearing against the wedge, a loosening screw arranged in the gland and engaged with a screw-threaded opening in the wedge, and an adjusting device engaging with the lower portion of the packing-ring, substantially as set forth?z Witness my hand this 16th day of May, 1898.

FRANK E. CHASE.

Witnesses:

JN0. J. BONNER, THEO. L. PoPP.

IOO

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